Preheat the oven to 350 degrees F. Using a sharp knife, cut spaghetti squash in half. Scoop seeds out and either throw away or save them to lightly toast in the oven later. Then cut each half into even quarters.
On a half-sheet tray or a 9 x 13 inch pan, add enough water to barely cover bottom of pan. Place squash pieces in the pan with the shell facing up. Bake 30-40 minutes or until squash is soft and pulls apart easily.
Serve with a favorite sauce, such as Basic Basil Tomato Sauce.